Turkish jets have frequently attacked PKK positions across the border in Iraq, since a cease-fire between the rebels and the government collapsed last year.

Last week, Turkey sent tanks across the Syrian border to fight the Islamic State group and to halt the advance of Syrian Kurdish groups affiliated with the PKK.

On Sunday, two separate blasts in the Turkey's Kurdish-dominated southeast killed one Turkish soldier and wounded eight others, and Kurdish militants launched a rocket-propelled grenade against a civilian airport.